On Fri, Mar 24, 2017 at 03:17:24PM +0000, Chris Wilson wrote: > The required number of dwords for semaphore emission on BDW RCS is 8, > not 6 - leading to ring buffer corruption and immediate GPU hangs when > using ringbuffer submission. > > Signed-off-by: Chris Wilson <[email protected]>
Reviewed-by: Michał Winiarski <[email protected]> -Michał > --- > drivers/gpu/drm/i915/intel_ringbuffer.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c > b/drivers/gpu/drm/i915/intel_ringbuffer.c > index 62756eb2bd4a..4729ac7ac122 100644 > --- a/drivers/gpu/drm/i915/intel_ringbuffer.c > +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c > @@ -2117,7 +2117,7 @@ int intel_init_render_ring_buffer(struct > intel_engine_cs *engine) > > num_rings = > hweight32(INTEL_INFO(dev_priv)->ring_mask) - 1; > - engine->emit_breadcrumb_sz += num_rings * 6; > + engine->emit_breadcrumb_sz += num_rings * 8; > } > } else if (INTEL_GEN(dev_priv) >= 6) { > engine->init_context = intel_rcs_ctx_init; > -- > 2.11.0 > > _______________________________________________ > Intel-gfx mailing list > [email protected] > https://lists.freedesktop.org/mailman/listinfo/intel-gfx _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
